Cupola.



mower opening thereinto, a pluroiity of raciietion. rings built into and spaced eport in the stack above the fueionzone and means for forcingA o blast through seid rings serieiiy downwertl to the twyere9 enti porte in o lower ring opening` to the interior oit 'the Steele to permit portion oit the loiret to enter the Steek, for the purpose described.,

10. #cupole herring e'tneon zone, trvj'ere opening'rnereintmn plurality ont reoiietion ringe built into :intl spaced eport in the Steck eiiove the fusion `zone enti ineens for forcing it blas't through said rings serially downward to the twyers, and porte in o tower ring opening to the interior oi? the steckte ,'permit portionof the blast to enter the steelt,`

together with means for opening seid ring to the surrounding oir for cooling, solisten tigiiiy is clescribeol. I

'11., Ar cupole having in its stack :i pair of radiation rings spaced verticoily apart to- @ether with piping connecting the seine in series., each of seicii'ings barring' en inner periphery adapted to lie usli with the inner fece'of the stack :mei outwardly extending "tramitar radiation tins confined within the steelt area, together with ineens for passing e bloot, of air through Said rings in series to the twyers, substantially as flescriheti.

12. it, cupola having in ite stack e pair ont radiation rings spaced 'vertically apart to' @ether with piping connecting.; the same in series, each oi simi ringe hav-mg en inner periphery adopted to he timoh with the' inner ieee oit the stack and outwarly extending annular radiation fins. confined Within. the stack e1ea, port's in the lower. ring opehin) to the interior of the Stacie' together Wit means for passing o, blast of oir through seidringe in series to the twyers, substun tioiiy es, cioecriiied. e v

1"?? As u new erticie of manufacture for nee in e cupola? n roc'ietion ring having inner and outer olirnneter corresponding substentiaily to that oi the lining oi the cupole stacirs and outwordliy extending amnxiier radiation fins on said ring extending in the direction of travel of the air througirthe ringl in adjusted position.

llt. As a new article of manufacture for use in a'cupoia, a radiation rin having inner and outer diameter correspon ing; substantially to that of the iininggr of the cupole stack, enti outwardly extending annular radiation .tins on seid ringf extending in the direction oi travel-of the air through the ring in mijusted position, said ring having porte opening throughits inner periphery to the nir @honnete on its outer face, for the purpose described.

in testimony whereof have signed my name to this specification, in the presence of two subscribing witnesses.

riot rrete iuorsrmicrmrro.

Witnesses H. C. Coxe., STEMRY. 

